Screwdriver holder



FIG. 1 is a perspective view of the screwdriver holder showing my new design;

FIG. 2 is a front elevation thereof with a screwdriver shown in broken lines. The broken line forms no part of the claim;

FIG. 3 is a left side view thereof, the right side view being a mirror image thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a screwdriver holder, as shown and described. 